论文部分内容阅读
基于能值理论,使用2000-2012年河南省耕地实物投入数据,对河南省耕地集约利用的整体特征和时空差异进行分析.结果表明:(1)13年间河南省耕地利用集约度和各种投入要素能值整体都呈现上升的趋势,但各种投入要素对耕地利用集约度的贡献发生较大变化,农业机械和地膜的重要性显著提升,化肥的重要性基本保持不变,而劳动力和农药的重要性则大大下降;(2)不同等级耕地集约利用的县域数量分布大致呈倒“V”型,即中度集约利用的县域数量最多,而精细利用和粗放利用的县域数量最少;(3)河南省耕地集约利用等级状况存在显著空间差异,耕地集约利用水平相对较高的县域分布在河南省中部和西北部,集约度较低的县域集中于河南的整个南部;(4)河南省各县域耕地集约利用水平与社会经济发展水平之间的不协调程度有所增加,其中耕地集约利用水平超前社会经济发展水平的县域集中于河南东部和中南部,耕地集约利用水平滞后社会经济发展水平的县域集中于河南中部和西北部.最后,基于上述结论,针对河南省耕地集约利用提出几点建议.
Based on the emergy theory, this paper analyzed the overall characteristics and space-time differences of intensive use of cultivated land in Henan Province from 2000 to 2012. The results showed that: (1) The intensive use of cultivated land and various inputs However, the contributions of various input factors to the degree of intensive use of cultivated land greatly changed, the importance of agricultural machinery and plastic film increased significantly, the importance of chemical fertilizers remained basically unchanged, and the labor force and pesticide (2) The distribution of the counties under intensive use of cultivated land of different grades is roughly in the form of “V”, that is, the county with the most intensive use is the most, while the counties with the fine utilization and the extensive use are the least; (3) There are significant spatial differences in the level of intensive utilization of cultivated land in Henan Province. The counties with relatively high level of cultivated land intensive utilization are located in the central and northwestern parts of Henan Province, while the less intensive county areas are concentrated in the entire southern part of Henan. (4) The degree of disharmony between the level of intensive utilization of cultivated land and the level of social and economic development in all counties in the province has increased, among which the level of intensive utilization of cultivated land has advanced ahead of the social and economic development Flat county concentrated in the eastern and south-central Henan, intensive use of arable land lagging social and economic development of the county focus on the central and northwestern Henan. Finally, based on the above conclusions, some suggestions for the intensive use of arable land in Henan Province.